Yokogawa PW701 | 120VAC | Distributed Control System Power Supply Module

Product Description

The PW701 (PW701) is a high-capacity power supply module engineered for Yokogawa’s legacy and specialized control rack architectures. This unit is designed to provide the foundational logic power required for high-density PLC and DCS configurations, converting a 120VAC primary input into the stabilized DC rails necessary for backplane communication. Built for long-term industrial reliability, the PW701 (PW701) ensures that processor cards and I/O modules receive consistent, ripple-free voltage, which is essential for maintaining deterministic control in process automation.

The module features a ruggedized chassis designed for thermal efficiency and resistance to industrial electromagnetic interference (EMI). Its robust internal circuitry is protected against over-voltage and over-current conditions, acting as a critical safeguard for the sensitive electronics integrated within the control rack. Whether utilized as a primary power source or as part of a maintenance spare strategy, the PW701 (PW701) is a vital component for ensuring system uptime in heavy industrial environments.

Technical Specifications

• Manufacturer: Yokogawa Electric Corporation

• Model Number: PW701

• Equipment Category: System Power Supply Module

• Input Voltage: 120V AC (Nominal)

• Input Frequency: 50/60 Hz

• Device Function: Backplane and Logic Power Distribution

• Physical Weight: 2.02 kg (Approx. 4.45 lbs)

• Hardware Form Factor: Rack-mountable PLC/DCS Card

• Mounting: Dedicated PSU slot within compatible Yokogawa racks

• Protective Features: Integrated fuse protection and voltage regulation

• Cooling: Natural convection within the rack chassis

Industrial Applications

The PW701 (PW701) is predominantly deployed in established manufacturing facilities, power plants, and chemical processing sites where reliable logic power is mandatory. It is specifically used to support the central processing units and high-speed communication modules that manage critical process loops. Its heavy-duty construction makes it particularly suitable for environments where electrical stability is challenged by large inductive motor loads.

FAQ

Is the PW701 compatible with 240VAC input systems?

No, the PW701 (PW701) is specifically rated for 120VAC input. For 240V environments, a different power module variant (such as the PW702) must be utilized to prevent hardware damage.

What is the recommended replacement interval for this power module?

While the PW701 (PW701) is designed for continuous duty, it is recommended to inspect the unit every 3-5 years for capacitor aging or thermal stress, especially if operated in high-temperature control cabinets.